US Open Golf Tournament, Day 2 (June 14, 2013)

Images from the second day of the US Open golf tournament at the Merion Golf Club in Ardmore, Pennsylvania on Friday, June 14, 2013.

Phil Mickelson tees off on the fourth hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Darron Cummings)

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Tiger Woods waits to putt on the 14th hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Morry Gash)

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John Nieporte hits out of a bunker on the seventh hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Julio Cortez)

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Luke Donald, of England, reacts to a putt on the 17th hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar)

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Phil Mickelson hits out of a bunker on the second hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Darron Cummings)

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Tiger Woods watches his tee shot on the 16th hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Morry Gash)

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D.A. Points reacts after a tee shot on the eighth hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Julio Cortez)

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Gavin Hall hits out of a bunker on the seventh hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Julio Cortez)

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Paul Lawrie, of Scotland, tees off on the 14th hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Morry Gash)

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Luke Donald, of England, reacts after putting on the 18th hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Charlie Riedel)

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Luke Donald, of England, hits out of a bunker on the 15th hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Morry Gash)

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Luke Donald, of England, hits down the 15th hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Morry Gash)

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Phil Mickelson waits on the practice green for his tee time during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Charlie Riedel)

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Matt Harmon walks with his caddie to the fifth tee during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Julio Cortez)

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K.J. Choi, of South Korea, checks his shot on the eighth hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Darron Cummings)

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Tiger Woods, from left, Adam Scott, of Australia,†and Rory McIlroy, of Northern Ireland, walk down from a tee box during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar)

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Adam Scott, of Australia, reacts to a missed putt on the 14th hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar)

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Hideki Matsuyama, of Japan, hits on the 15th hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Morry Gash)

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Rory McIlroy, of Northern Ireland, chips onto the ninth green during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar)

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Zach Johnson hits out of a bunker on the 10th hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar)

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Matt Harmon tees off on the eighth hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Julio Cortez)

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Sang Moon Bae, of South Korea, reacts to his putt on the seventh hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Darron Cummings)

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Graeme McDowell, of Northern Ireland, reacts after a bunker shot on the 17th hole during the second round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Morry Gash)

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Rory McIlroy, left, of Northern Ireland, and Tiger Woods shake hands after putting on the 18th hole during the first round of the U.S. Open golf tournament at Merion Golf Club, Friday, June 14, 2013, in Ardmore, Pa. (AP Photo/Gene J. Puskar)